EP1507410A1 - Reprogrammable control signal generator for video signals - Google Patents
Reprogrammable control signal generator for video signals Download PDFInfo
- Publication number
- EP1507410A1 EP1507410A1 EP04017521A EP04017521A EP1507410A1 EP 1507410 A1 EP1507410 A1 EP 1507410A1 EP 04017521 A EP04017521 A EP 04017521A EP 04017521 A EP04017521 A EP 04017521A EP 1507410 A1 EP1507410 A1 EP 1507410A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- video
- microsequencers
- control signal
- timing generator
- flags
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
- G06F9/30145—Instruction analysis, e.g. decoding, instruction word fields
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
- H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
- H04N21/4263—Internal components of the client ; Characteristics thereof for processing the incoming bitstream involving specific tuning arrangements, e.g. two tuners
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/46—Receiver circuitry for the reception of television signals according to analogue transmission standards for receiving on more than one standard at will
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/913—Television signal processing therefor for scrambling ; for copy protection
- H04N2005/91357—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal
- H04N2005/91364—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal the video signal being scrambled
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/025—Systems for the transmission of digital non-picture data, e.g. of text during the active part of a television frame
- H04N7/035—Circuits for the digital non-picture data signal, e.g. for slicing of the data signal, for regeneration of the data-clock signal, for error detection or correction of the data signal
Abstract
Description
According to an aspect of the invention, a timing generator for use within a video processing device comprises:
- a plurality of shift registers, coupled to said plurality of microsequencers that
- provide operating parameters to said plurality of microsequencers.
- a means for downloading software changes to said timing generator while said timing generator is processing a video signal without substantial interference to a
- video signal being processed.
- an instruction set that enables said plurality of microsequencers to share said
- random access memory.
Advantageously, said plurality of microsequencers includes seven microsequencers.
Advantageously, said programmable combinational logic produces control signals that support a copy protection process.
Advantageously, the copy protection process is a MACROVISION copy protection process.
Advantageously, said video processing device is a television.
Advantageously, said video processing device is a cable set-top box.
According to an aspect of the invention, a video processing system comprises:
- a video input interface;
- a video decoder coupled to said video input interface;
- a video and graphics processor coupled to said video decoder;
- a video encoder coupled to said video and graphics processor; and
- a video output interface coupled to said video encoder,
Advantageously, said timing generator contains software for implementing a MACROVISION copy protection process.
Advantageously, said video processing system has been implemented on a single integrated circuit.
According to an aspect of the invention, a method for generating a time-dependent control signal for video signals comprises the steps of:
- (a) storing a plurality of programs within a random access memory;
- (b) accessing a plurality of programs stored within the random access memory;
- (c) executing a set of programs from said plurality of programs by a plurality of microsequencers to generate a set of flags;
- (d) generating a control signal based on the set of flags through application of programmable controlled logic; and
- (e) outputting said control signal.
Advantageously, the step of accessing includes arbitrating the access to the random access memory by the plurality of microsequencers.
Advantageously, the step of executing is completed in parallel by a plurality of microsequencers.
Advantageously, the control signal is a control signal used to implement a MACROVISION copy protection process.
Advantageously, the control signal is a horizontal sync control signal.
Advantageously, the control signal is an external horizontal sync control signal.
Advantageously, the control signal is an external vertical sync control signal.
Advantageously, the control signal is a vertical blanking active control signal.
Advantageously, the control signal is a color burst control signal.
Advantageously, the control signal is a U Flip control signal to generate MACROVISION color stripes.
Advantageously, the control signal is a V Flip control signal to generate MACROVISION color stripes.
Advantageously, the control signal is a vertical sync control signal.
Advantageously, the control signal is a vertical blank control signal.
- Horizontal Sync Control Signal. This signal includes equalization and serration pulses, as well as pseudo-syncs for MACROVISION.
- External Horizontal Control Signal. This signal is generally the same as the Horizontal Sync Control Signal, except that it generates a standard horizontal sync on every line and nothing else.
- External Vertical Sync Control Signal. This signal is similar to a vertical active signal, but allows for differences in digital and analog formats.
- Vertical Blanking Active Control Signal. This signal is used during blanking a line or if the vertical active signal analog line length is different than required by a vertical blanking interval encoder.
- Color Burst Control Signal. This signal generates color burst timing. This control signal must also be on during MACROVISION color stripe.
- U Flip Control Signal. This signal is used to generate MACROVISION color stripes. The signal inverts the phase of the U component of the color burst. This signal is not used to change the phase of the color burst for PAL/NSTC, which is done by another mechanism.
- V Flip Control Signal. This signal is used to generate MACROVISION color stripes. The signal inverts the phase of the V component of the color burst. This signal is not used to change the phase of the color burst for PAL/NSTC, which is done by another mechanism.
- V Sync Control Signal. This signal is used to support vertical sync.
- V Blank Control Signal. This signal is used to support vertical blank.
- Horizontal Active Video Control Signal. This signal supports the horizontal portion of active video. The signal denotes which areas of a horizontal line have video information within them.
- Vertical Active Video Control Signal. This signal supports the vertical portion of active video. The signal denotes which vertical lines have video information on them.
- Bottles Control Signal. This signal supports bottle signals needed for SECAM.
- Odd/Even Control Signal. This signal denotes which field is currently being encoded. The falling edge of this signal is used as a new frame signal.
- New Line Control Signal. This signal is used to mark a new line and is used in the determination of which phase to give to the current line.
- AGC Control Signal. This signal is used to generate AGC pulses in an AGC multiplexer.
- Back Porch Control Signal. This signal is used to generate the back porch signal to the AGC multiplexer.
Claims (10)
- A timing generator for use within a video processing device, comprising:a random access memory;a plurality of microsequencers coupled to said random access memory that produce flags based on programs stored in said random access memory; anda programmable combinational logic module, coupled to said plurality of microsequencers that generates control signals based on the flags produced by
- The timing generator of claim 1, further comprising:a plurality of shift registers, coupled to said plurality of microsequencers that provide operating parameters to said plurality of microsequencers.
- The timing generator of claim 1 or 2, further comprising:a means for downloading software changes to said timing generator while said timing generator is processing a video signal without substantial interference to a video signal being processed.
- The timing generator of any of the preceding claims, further comprising:an instruction set that enables said plurality of microsequencers to share said random access memory.
- A video processing system, comprising:a video input interface;a video decoder coupled to said video input interface;a video and graphics processor coupled to said video decoder;a video encoder coupled to said video and graphics processor; anda video output interface coupled to said video encoder,
- A video processing system of claim 5, wherein said timing generator contains software for implementing a MACROVISION copy protection process.
- A video processing system of claim 5 or 6, wherein said video processing system has been implemented on a single integrated circuit.
- A method for generating a time-dependent control signal for video signals, comprising the steps of:(a) storing a plurality of programs within a random access memory;(b) accessing a plurality of programs stored within the random access memory;(c) executing a set of programs from said plurality of programs by a plurality of microsequencers to generate a set of flags;(d) generating a control signal based on the set of flags through application of programmable controlled logic; and(e) outputting said control signal.
- The method of claim 8, wherein the step of accessing includes arbitrating the access to the random access memory by the plurality of microsequencers.
- The method of claim 8 or 9, wherein the step of executing is completed in parallel by a plurality of microsequencers.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US640627 | 2003-08-14 | ||
US10/640,627 US7555125B2 (en) | 2003-08-14 | 2003-08-14 | Systems and methods for generation of time-dependent control signals for video signals |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1507410A1 true EP1507410A1 (en) | 2005-02-16 |
Family
ID=33565264
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04017521A Withdrawn EP1507410A1 (en) | 2003-08-14 | 2004-07-23 | Reprogrammable control signal generator for video signals |
Country Status (2)
Country | Link |
---|---|
US (1) | US7555125B2 (en) |
EP (1) | EP1507410A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7489362B2 (en) | 2003-03-04 | 2009-02-10 | Broadcom Corporation | Television functionality on a chip |
US9289398B2 (en) | 2006-03-30 | 2016-03-22 | Ptc Therapeutics, Inc. | Methods for the production of functional protein from DNA having a nonsense mutation and the treatment of disorders associated therewith |
US8457122B2 (en) * | 2007-08-01 | 2013-06-04 | Broadcom Corporation | Multiport switch for cascaded ethernet AV device networking |
US8393008B2 (en) * | 2008-05-21 | 2013-03-05 | Microsoft Corporation | Hardware-based output protection of multiple video streams |
US20090317057A1 (en) * | 2008-06-24 | 2009-12-24 | Hua Wu | Apparatus and method for selectively outputting hd/sd signals as high definition video according to copy protection |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6381747B1 (en) * | 1996-04-01 | 2002-04-30 | Macrovision Corp. | Method for controlling copy protection in digital video networks |
EP1244007A2 (en) * | 2001-03-21 | 2002-09-25 | Broadcom Corporation | Dynamic microcode patching |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5694588A (en) * | 1993-05-07 | 1997-12-02 | Texas Instruments Incorporated | Apparatus and method for synchronizing data transfers in a single instruction multiple data processor |
JP3449106B2 (en) * | 1996-03-06 | 2003-09-22 | ソニー株式会社 | Video signal processing apparatus, video signal processing method, and video signal recording / reproducing apparatus |
US6826352B1 (en) * | 2000-03-29 | 2004-11-30 | Macrovision Corporation | Dynamic video copy protection system |
-
2003
- 2003-08-14 US US10/640,627 patent/US7555125B2/en active Active
-
2004
- 2004-07-23 EP EP04017521A patent/EP1507410A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6381747B1 (en) * | 1996-04-01 | 2002-04-30 | Macrovision Corp. | Method for controlling copy protection in digital video networks |
EP1244007A2 (en) * | 2001-03-21 | 2002-09-25 | Broadcom Corporation | Dynamic microcode patching |
Non-Patent Citations (2)
Title |
---|
CHAOUI J ET AL: "OMAP: Enabling Multimedia Applications in Third Generation (3G) Wireless Terminals", TEXAS INSTRUMENTS WHITE PAPER, XX, XX, 1 December 2000 (2000-12-01), pages 1 - 12, XP002314534 * |
KAINKA B: "MICROCONTROLLER. ÖDRIVEN UART", ELEKTOR ELECTRONICS, ELEKTOR ELECTRONICS, GB, vol. 19, no. 217, 1 December 1993 (1993-12-01), pages 80 - 83, XP000417219, ISSN: 0268-4519 * |
Also Published As
Publication number | Publication date |
---|---|
US20050036764A1 (en) | 2005-02-17 |
US7555125B2 (en) | 2009-06-30 |
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